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  1. #1

    Join Date
    Aug 2013
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    2

    1990 650 super jet shuting off after 15 min

    I have 1990 650 starts up and runs good tell gets hot and shuts off
    check hoses looks ok but still shuting off
    motor is hot will not start
    cooled down and starts right up.
    motor not locked up
    140 psi on both heads


  2. #2
    Myself's Avatar
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    May 2007
    Location
    North Central Arkansas
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    Cooling system or exhaust blockage. Unhook and blow through each cooling hose. Take off and inspect exhaust hoses and waterbox for a broken baffle.

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